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Breast Milk Storage Guide

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use or discard by
Room temperature (about 25C)up to 4 hours
Insulated cooler with ice packsup to 24 hours
Refrigerator (4C)up to 4 days
Freezer6 months best, up to 12 months
Thawed in fridge, not refrozenuse within 24 hours

See how long freshly expressed breast milk stays safe at room temperature, in a refrigerator and in a freezer, and get an exact use-by date and time for the milk you just pumped. Widely used guidance suggests roughly four hours at room temperature, about four days in the back of a fridge, and around six to twelve months in a freezer, with sooner always being better for quality. This tool lets you enter the date and time you expressed the milk, then applies the standard limits for each storage location so you can label bottles and bags with a clear discard-by time and reduce waste. It also lists the reference limits so you can plan ahead. Always cool milk promptly, store it at the back where temperatures are steadiest, and never refreeze thawed milk. Everything is calculated in your browser, and this is general information, not medical advice. Follow your own health authority guidance for at-risk or premature infants.

Frequently asked questions

What is Breast Milk Storage Guide?

See how long freshly expressed breast milk stays safe at room temperature, in a refrigerator and in a freezer, and get an exact use-by date and time for the milk you just pumped. Widely used guidance suggests roughly four hours at room temperature, about four days in the back of a fridge, and around six to twelve months in a freezer, with sooner always being better for quality.

Is Breast Milk Storage Guide free to use?

Yes. Breast Milk Storage Guide is completely free, with no sign-up and no usage limits.

Does Breast Milk Storage Guide work in a web browser?

Yes. Breast Milk Storage Guide runs in any modern web browser. There is nothing to download or install.

Is my data private with Breast Milk Storage Guide?

Yes. Breast Milk Storage Guide runs entirely on your device in your browser, so nothing you enter is uploaded to a server.